#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
int isaMUstring( const char *string );
 
 
 
 
int main(){
 
	int size;
	char input[20];
 
	char *ptr;
 
 
	printf("Enter the size of string.");
	scanf("%d",&size);
 
	ptr = (char *)malloc((size +1) * sizeof(char *));
 
 
 
	if( ptr) {
 
	printf("Enter a character string(consist of 'M', 'I', 'U' only) :\n");
	scanf("%s",&input);
 
 
	isaMUstring( input );
 
	}
 
	return 0;
}
 
int isaMUstring( const char *string ) {
 
 
	const char *cha1 = "M";
	const char *cha2 = "I";
	const char *cha3 = "U";
	int a;
 
	a = 0;
 
	if( strpbrk( string, cha1) != NULL) {
		a += 1;
	}
	if( strpbrk( string, cha2) != NULL) {
		a += 1;
	}
	if( strpbrk( string, cha3 ) != NULL) {
		a += 1;
	}
 
	if( a == 3 ) {
 
		printf("Correct\n");// return 1;
	}
	else {
		printf("Wrong\n");//return 0;
	}
 
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int isaMUstring( const char *text )
{
   return strlen(text) == strspn(text, "MIU");
}

int main()
{
   int size;
   char *input;

   printf("Enter the size of string.");
   scanf("%d", &size);

   input = malloc(size + 1);
   if ( input )
   {
      printf("Enter a character string(consist of 'M', 'I', 'U' only) :\n");
      scanf("%s", input);

      if ( isaMUstring( input ) )
      {
         puts("Correct");
      }
      else
      {
         puts("Wrong");
      }
   }
   return 0;
}